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发明名称
MAGNETIC HOLDING DEVICE
摘要
申请公布号
CA570997(A)
申请公布日期
1959.02.17
申请号
CAD570997
申请日期
申请人
WESTINGHOUSE ELECTRIC CORPORATION
发明人
MARVIN H. CUNNINGHAM
分类号
主分类号
代理机构
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